package 添加字符;

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String s1 = in.next();
        String s2 = in.next();
        int n = s1.length();
        int m = s2.length();
        int res = m;
        for (int i = 0; i <= m - n; i++) {
            int tmp = 0;
            for (int j = 0; j < n; j++) {
                if (s1.charAt(j) != s2.charAt(i + j)) {
                    tmp++;
                }
            }
            res = Math.max(res, tmp);
        }
        System.out.println(res);
    }
}
